Got mine, took from 0630 to 800 Saturday. No hiccups. I won’t rant and rave about it yet, all I wanted was for it to be better than 8.1 and it is. No complaints so far.
Even the hard-core Windows haters are generally willing to say Windows 10 is better than Windows 8.x
Might be damning with faint praise, but it's true, it is better in nearly every respect than its predecessor.